Dust hood



March 8, 1927.

H. W. PETERS DUST HOOD Filed Nov. 18. 1925 Fl 3' y INVENTOR.

- 'HENRY W PETERS BY Patented Mar. 8, 1927.

'UNITED STATES a 1,620,390 PATENT OFFICE.

HENRY W. PETERS, OF COLUMBUS, OHIO nusr noon.

Application filed November 18, 1925. Serial No. 69,916.

- My resent invention relates to improve.- ments 1n dust hoods designed especially for use as an accessory in connection with portview of the, hood at line 2-2 of Figure 1.

able vacuum cleaners of the type using both a blast tube and suction pipeor tube for loosening and gathering dust.

The primary object of the invention is the provisionof an approximately airtight hood adapted to enclose and .form a dust chamber about a variety of structures or objects .during the process of cleaning with the aid of a vacuum cleaning machine. The interior of the hood or dust chamber is placed in communication with the vacuum machine through an air blast pipe or flexible tube and a suction pipe or flexible tube in order that the currents of air from the air blast tube may circulate within the dust chamber of the hood for loosening and agitating the dust on the inclosedarticle; By means of the suction tube the agitated dust particles while in suspension 1n the dust chamber aredrawn through the tube and de posited or discharged into a suitable receptacle. provided for the pur ose,*thus eliminating dissemination of d iist to the surrounding atmosphere and insuring a thorough cleaning operation of the machine.

The hood is especially adapted for use in connection with vacuum cleaning machines employed in stores, factories, warehouses,

' oflice buildings, shops etc. for cleaning steam or hot water heat radiators, motors, machinery and other structures which will permit enclosure by the hood for the purpose described.

The hood is fashioned of flexible material that is substantially air tight, and is designed in various slzes and shapes for use over standard articles or structures to be cleaned. r

The invention consists in certain novel combinations and arrangements of parts as will hereinafter be more fully set forth and In, the accompanying drawings I have illustrated several examples of the physical embodiment of m invention wherein the parts are combine and arranged according to modes -I have thus far devised. for the practical application of the principles of my invention.

Figure 1 is a view in side elevation showing by dotted lines a vacuum cleaning machine and its connected air blast and suction pipes or tubes, with the hood in fulllines enclosing a conventional type of hot water or steam radiator shown in dotted lines.

Figure 2 isa vertical transverse sectional Figure 3 is a view in elevation showing a hood with slits or slots adapting it for use with an enclosed structure having projecting parts as connecting pipes to a radiator.

Figure 4 is an enlarged transverse vertical sectional view of the hood at line H of Figure 3.

Figure 5 is an exterior view showing the hood enclosing an electric motor indicated in dotted lines.

In order to show the general arrangement of parts in carrying out my invention I have indicated in Figure. 1 by dotted lines a conventional type of vacuum cleaning machine as 1 having wheels 2 and handle 3 by means of which it may be trundled from place to place for use. The vacuum cleaning ma chine is equipped with an upper flexible suction tube 4 and a lower air blast or blower tube 5 which is also flexible, and these parts are connected to the vacuum machine in such hood. A fastening ring 10 is used to clamp the head within a neck portion 11 of the hood and insure an air tight connection betweenthe suction tube and hood.

The hood as before stated may be fashioned in various sizes and shapes from flexible non-porous and substantially air tight material, and when not in use may be folded into compact form for stowing away. When put in use the hood is attached to the suction tube and dropped over the structure to be cleaned, as a radiator in Figure 1 and an electric motor in Figure 5.

The edge of the lower open end of the hood is fashioned with a casing 12 through which a draw strin or cord 13 is passed, and the cord or strin is then drawnv taut about the lower portion of the hood and about the lower portion of the motor as in Figure 5. The ends ofthe cord13 are tied atmosphere.

escape of air currents that might carry dust with them to the atmosphere.

In some instances the hood is fashioned with slits or slots as 14 in its walls which slip over laterally projecting parts of the structure to be enclosed and the walls of the slits are fashioned with overlapping fiaps/ 1 5 for the purpose of closing the slits as much as possible against circulation of air currents from the interior of the hood to the After the hood has been dropped over the structure to be cleaned the overlapping flaps are properly adjusted to substantially prevent air escape from the hood.

In use the suction tube 4 is detachably but firmly connected with the hood-and the latter is dropped over the structure to be cleaned, as a hot water radiator in Figure 1 or an electric motor in Figure 5. The draw string or cord is drawn taut and tied to form an approximately closed dust chamber within the hood, and the nozzle 6 of the air blast tube is then introduced to the hood in such position as to direct air under pressure to agitates them and they are suspended by the air within the hood. The draft or suction created in the dust outlet pipe or suction pipe 4 carries the suspended particles of dust from the dust chamber within the hood, and the dust is properly disposed of or deposited in a suitable receptacle.

After the enclosed structure has been properly cleaned, the draw string is loosened to permit removal of the hood, and if the hood is not required it may be detached from the suction tube, folded, and stowed away until further needed.

Having thus fully described my invention what I claim as new and desire to secure by Letters Patent, is V The combination with a vacuum cleaning machine having an airjblast pipe and a suction pipe, of a flexible, non-porous hood adapted to enclose a structure to be cleaned, means for closing the free edge of the hood about the enclosed structure, a detachable connection between the hood and suction pipe, and a nozzle on the air blast pipe for introducing air currents to the interior of the hood.

In testimony whereof I have. afiixed my signature.

HENRY W. PETERS. 

